20329503623 has 16 divisors (see below), whose sum is σ = 24210797856. Its totient is φ = 16826019840.

The previous prime is 20329503619. The next prime is 20329503629. The reversal of 20329503623 is 32630592302.

It is a cyclic number.

It is not a de Polignac number, because 20329503623 - 2² = 20329503619 is a prime.

It is a super-2 number, since 2×20329503623² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20329503629) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 963290 + ... + 984167.

It is an arithmetic number, because the mean of its divisors is an integer number (1513174866).

Almost surely, 2^20329503623 is an apocalyptic number.

20329503623 is a deficient number, since it is larger than the sum of its proper divisors (3881294233).

20329503623 is a wasteful number, since it uses less digits than its factorization.

20329503623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1947554.

The product of its (nonzero) digits is 58320, while the sum is 35.

The spelling of 20329503623 in words is "twenty billion, three hundred twenty-nine million, five hundred three thousand, six hundred twenty-three".